GUI编程——文本框、密码框及文本域

 1 package com.kuang.lesson06;
 2 
 3 import javax.swing.*;
 4 import java.awt.*;
 5 import java.util.Vector;
 6 
 7 public class TestTextDemo01 extends JFrame {
 8 
 9     //文本框
10     public TestTextDemo01(){
11         Container container=this.getContentPane();
12 
13         JTextField textField=new JTextField("hello");
14         JTextField textField2=new JTextField("world",20);
15 
16         container.add(textField,BorderLayout.NORTH);
17         container.add(textField2,BorderLayout.SOUTH);
18 
19         this.setVisible(true);
20         this.setSize(500,350);
21         this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
22     }
23 
24     public static void main(String[] args) {
25         new TestTextDemo01();
26     }
27 }

package com.kuang.lesson06;

import javax.swing.*;
import java.awt.*;

public class TestTextDemo02 extends JFrame {

    //密码框
    public TestTextDemo02(){
        Container container=this.getContentPane();

        JPasswordField passwordField=new JPasswordField();
        passwordField.setEchoChar(‘*‘);

        container.add(passwordField);

        this.setVisible(true);
        this.setSize(500,350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestTextDemo02();
    }
}

 1 package com.kuang.lesson05;
 2 
 3 import javax.swing.*;
 4 import java.awt.*;
 5 
 6 public class JScrollDemo extends JFrame {
 7 
 8     public JScrollDemo(){
 9         Container container=this.getContentPane();
10 
11         //文本域
12         JTextArea textArea=new JTextArea(20,50);
13         textArea.setText("欢迎学习Java！");
14 
15         //Scroll面板
16         JScrollPane scrollPane=new JScrollPane(textArea);
17         container.add(scrollPane);
18 
19         this.setVisible(true);
20         this.setBounds(100,100,300,350);
21         this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
22     }
23 
24     public static void main(String[] args) {
25         new JScrollDemo();
26     }
27 }